Tom Jensen, who runs the Democratic firm Public Policy Polling: “Republicans pretty much universally say they think the country is on the wrong track because they don’t like the president and don’t want to give him any credit. One set of findings we had that really drove that home is that nationally 64 percent of Republicans say the unemployment rate has increased under President Obama, to only 27 percent who say it’s decreased. And 57 percent say the stock market has gone down under Obama, to only 27 percent who say it’s gone up. Obviously, when you see voters saying something that’s just very objectively wrong they don’t care about the actual statistics. Their assessments on that question are just driven by emotion and their negative feelings toward President Obama.”

Oh my. these are questions of fact. Most Republicans have incorrect beliefs about simple questions (on the unemployment rate I think PPP should have specified that they are talking about the official numbers not some "real" unemployment rate).

But look, there's that number again. On the two questions 27% of Republicans answer correctly. 27% is the Kung Fu Monkey crazification factor
It turns out that there is some balance and symmetry. Overall 27% of Americans are crazy. Also 27% of Republicans are sane.